Scarifier attachment for graders



July 14, 1925.

E. C. MYERS SGARIFIER ATTACHMENT FOR GRADERS 3 Sheets-Sheet l Filed Deo.13. 1925 //& Edward E MHETE d u 1 :if vl. gf/YM July 1 4, 1925.

E. c. MYERS I SCARIFIER ATTACHMENT FOR GRADERS 3 Sheets-Sheet 2 .7 o l os f, j

fx @ff l/l )/W @JN July 14,

E. C. MYERS SCARIFIER ATTACHMENT FOR GRADERS Filed'necf 13, 1923 5sheets-sheet s.

Patented July 14, 1925 UNITED STATES PATENT OFFICE.

EDWARD C. MYERS, OF MILWAUKEE, WISCONSIN, ASSIGNOR T WEHR C0., 0F

MILWAUKEE, WISCONSIN.

SCARIFIER ATTACHMENT FOR GRADERS.

Application led December 13, 1923. Serial No. 680,412.

To all whom it may concern.' A

Be it known that I, EDWARD C. MYERS, a citizen of the United States, andresident of Milwaukee, in the county of Milwaukee and State ofWisconsin, have vinvented certain new and useful Improvements inScarilier Attachments for Graders; and I do hereby declare that thefollowing is a full, clear, and exact description thereof. l0 vThisinvention relates to scarifiers.

Objects of this invention are to provide a scarifier attachment forstandard graders which may be applied to the grader without requiringany alteration whatsoever therein and which is rigidly and positivelyheld against stresses encountered in operation.

In graders of certain standard makes it is customary to provide a bladewhich is carried by a vertically adjustable frame- 20 work, and in whichthe blade support is rotatably held in a guide .carried by thisframework so that the blade is capable of lboth vertical and angularadjustment. -Further objects are to provide a scarilier 2 attachment asa separate and distinct entity which is secured detachably to thesupport of the blade of the grader, which moves with such blade so as togive the scariier both angular and vertical adjustment, to provide ascarifier which has vertical and annular adjustment independently of theblade, and to provide a scariier which may be easily moved intooperative or inoperar tive position.

An embodiment of the invention is shown in the accompanying drawings, inwhich lFigure 1 is a vertical section of the front portion of a graderwith the scarilier shown in operative position in full'lines, and ininoperative position in dotted lines, such s'ection being taken on theline 1 1 of Figure 2.

Figure 2 is a horizontal sectional view of the structure shown in Figure1, as indicated by the line 2-2 of Figure 1.

4 Figure 3 is a transverse sectional view on the line 3--3 of Figure 1.

The grader may comprise a power driven machine whose side bars 1 extendin a converging manner to the front casting 2 thereof. This frontcasting supports the front axle 3, as shown in Figure 1, and is providedwith a vertical pin 4. Upon this vertical pin the forward end plate 5 ofa frame composed of converging bars 6 and a transverse rear bar 7 (seeFigures 1 and 2) is ally operable -worms 21, as shown in Figure looselypivotally mounted. If desired, a transverse brace 8 may be providedinter- 'mediate the ends of the bars 6 and rigidly bolted thereto. Aguide 9 provided with an inwardly extending circular slot 10 is rigidlysecured to the frame 6. A blade support1ng\ structure comprising anannular member 11 of T-shaped formation is provided and rigidly carriesthe curved arms 12 to which the blade 13 is attached. This support 11 isT-shaped, as stated, and one of the flanges 14 of such T projects intothe slot 10, as shown in Figure 1, thus providing for angular adjustmentof the blade 13 with reference to the center line of the machine bypermitting the support 14 to'revolve about the guide 9. A short portionof a curved rack 15 is bolted to the inner side of the support 11 andmeshes with a plnion 16 operated in any suitable manner as by means of`a hand lever A17 provided with any suitable mechanism to hold it inadjusted position.

The rear bar 7 of the supporting frame is carried by a pair of rods 18which are pivotally joined to the outer ends of bar and are carried byarms 19 of segmentalI gears 20, such-gears meshing with manu- 3, so thatthe height of the frame may be adjusted and consequently the height ofthe blade. If desired, a link 22 may connect the rear bar 7 of the framewith a relatively stationary portion of the grader, as shown in Figure3, to hold such frame against lateral motion while permitting verticaladjustment.

It is to bey noted that the support 11 which v is revolubly carried bythe adjustable frame is provided with the curved arms 12 for the blade,las previously described, and that these curved'arms are provided withlaterally projecting flanges 23. Further than this, these arms extendaround the support 11 and form a portion thereof, as may be 100 `13 andthe support therefor.

These brackets are provided upon their lower ends with downwardlyextending lugs between which the upwardly projecting arms 26 of thescarifier 27 are positioned. These arms 26 are pivotally held betweenthe lugs 25 by means of bolts 28. 1t is to be noted that such arms areprovided with a plurality of apertures 26, as shown in Figure 1, so thatthe scarier may be given vertical adjustment with reference to the bladeThe scarifier is provided with a plurality of removable teeth or prongs29. A'bracket 3() of two piece, web-construction, as indicated in Figure1, is clamped about the forward portion of the support for the blade andgrips the flange 23 within its j aw-like portions. This bracket isprovided with a forwardly eX- tending apertured arm 31. A pair ofmembers 32 are bolted to this arm 31, as shown in Figures 1 and 2, andsuch lmembers are connected by means of chains 33 with the scarifier.These members 32 are provided with a plurality of apertures to secureangular adjustment Vof the scariier.

An auxiliary chain 34, as shown in dotted lines in Figure 1, is providedwith an upper hook 35 which is hooked over the brace 8 and with a lowerring 36 which may be slipped over any one' of the prongs of thescarifier, as shown in dotted lines in Figure 1, to hold such scariiertemporarily in inoperative position.

It will thus be seen that a scariier attachment has been provided whichmay be secured to a standard type of grader without requiring any changein the grader construction, which will move with the blade and bladesupport, and which is both vertically and angularly adjustable withreference both to said support and said blade.

Although the invention has been described` in considerable detail, it isto be understood that the invention may be variously embodied and is,therefore, to be limited only as claimed.

I claim:

1.A The combination of a grader having a blade and an adjustable Hangedsupport therefor adapted to move with said blade and a scarifiercomprising brackets detachably clampingl around the iange of saidsupport and adapted to move with said support, and a scarifying toolcarried by said brackets.

2. The combination of a grader having a blade and an adjustable supporttherefor adapted to Jnove with said blade, said support having a flange,and a scariier comprising brackets adapted to grip around said flange, ascarifying tool movably held by said brackets, and means for holdingsaid rality of members adapted to rigidly engage said support and tomove therewith, a scarifying tool pivotally and adj ustably held by saidmembers, and a flexible member attached to said tool and to a portion ofsaid support spaced from said rst mentioned members for holding saidtool in operative position.

4. The lcombination'of a grader having a blade, a support thereforcomprising a vertically adjustable frame, a guide carried by said frame,a support for said blade rotatably held by said guide, a set of bracketsdetachably attached to said support for said blade, a scarifierpivotally supported by said brackets and adapted to occupy both anoperative and inoperative position, a bracket detachably attached tosaid support for said blade at a point spacedl from said set ofbrackets, and a member connecting said last recited bracket and saidscariie'r.

5. The combination of a grader having a blade, a support thereforcomprising a vertically adjustablel frame, a guide carried by saidframe,'a support for said blade rotat-r ably held by said .guide, a setof brackets" detachably attached to said support for said blade, ascariier pivotally and adjustably supported by said brackets and adaptedto occupy both an operative 'and inoperative position, .a bracketdetachably attached to said support for said blade at a point spacedfrom said set of brackets, and a member adjustably connecting said lastrecited bracket and said scarien 6. The combination of a grader having ablade, a support therefor comprising a vertically adjustable frame, aguide carried by said frame, a blade support rotatably held by saidguide, a set of brackets detachably attached to said blade support, ascarifier attached to said' brackets by a pivotal joint permittingvertical adjustment of said scariier with reference to said bracketsandA adapted to occupy both an operative and an inoperative position, abracket detachably,

attached to said blade support at a point spaced from said set ofbrackets, and a flexible member adjustably connecting said last recitedbracket and said scarilier.

In testimony that I claim the foregoing l have hereunto set my handatvMilwaukee, in the county'of Milwaukee and State of Wisconsin.

EDWARD C. MYERS.

